Pragmatic uses .NET technology for both development and design. But it is not a must. If other technologies are better in specific situations, other vendors have a superior product Pragmatic won't hesitate to use them.
Pragmatic continious to support older technologies originated from Sybase (SAP), like Adaptive Server Enterprise, Adaptive server Anywhere, Powerbuilder and such. Especially Powerbuilder deserves attention, with their new owner Appeon it is evolving towards .NET
Pragmatic participated in several projects for Dutch Government organizations like Nationale Politie, Belastingdienst.
Pragmatic is familiar with Financial Institutions like Rabobank, Aegon.
Some examples of companies are Tennet, Engie, Netcreators, Cap Gemini, Royal Flora Holland, Lodder Software.